On a related note, one of the best storage mechanisms we have for hydrogen is in hydrocarbons. There is actually about 64% more hydrogen in a liter of gasoline

On a related note, one of the best storage mechanisms we have for hydrogen is in hydrocarbons. There is actually about 64% more hydrogen in a liter of gasoline than in a liter of liquid hydrogen. That same liter of hydrogen also only contains about 25% the energy of the liter of gasoline. We don't have a good way to contain and transport hydrogen as a fuel.